Teenagers filled the sidewalk outside a South Los Angeles party last week when gunfire rang out. After the crowd scattered, friends found a Crenshaw High School basketball player dead — the latest example of violence that is disproportionately killing young Black Angelenos, a Times analysis shows. The fatal shooting of Quincy Reese Jr., 16, left… Continue reading Crenshaw High athlete’s killing marks latest trauma for L.A.’s Black youth